Achieving High Stability of Dual-Wavelength U-Shaped Laser in the C-Band Using Optical Feedback

Mónica Far Brusatori, Holger Klein, Nicolas Volet

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperLetterpeer-review

Abstract

Dual-wavelength lasers are attractive for various fields such as terahertz generation and high-precision spectroscopy, particularly when exhibiting narrow-linewidth performance. This study focuses on linewidth measurements of a monolithically-integrated InP dual-wavelength laser emitting in the telecom C-band. Linewidths below 3 MHz are demonstrated for both lines, which reduce to values below 40 kHz after introducing optical feedback from both sides of the laser cavity. The device has a small form-factor and is made with mature technologies, and as such has direct applications in the aforementioned fields.

Original languageEnglish
JournalIEEE Photonics Technology Letters
Volume35
Issue10
Pages (from-to)573-576
Number of pages4
ISSN1041-1135
DOIs
Publication statusPublished - May 2023

Keywords

  • Dual-line laser
  • dual-wavelength laser
  • linewidth reduction
  • narrow linewidth lasers
  • optical feedback
  • semiconductor lasers
  • two-color laser

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